Heat seal machine



FIG. 1 is a perspective view of the heat seal machine;

FIG. 2 is a top plan view of the heat seal machine;

FIG. 3 is a side view of the heat seal machine;

FIG. 4 is the opposite side view of the heat seal machine;

FIG. 5 is a rear view of the heat seal machine;

FIG. 6 is a front view of the heat seal machine; and,

FIG. 7 is a bottom view of the heat seal machine. 

The ornamental design for a heat seal machine, as shown and described. 